Among all of the questions we get here at 39DollarGlasses.com, one of the most common queries definitely involves uncertainties when it comes to lenses. More often than not, people are little bit unsure of the difference between bifocals and progressives. If you often find yourself questioning the difference, read on to learn more. Bifocals: A bifocal lens is created with two different areas of vision correction, which are divided by a distinct line that sits horizontally across the lens. The top portion of the lens is used for distance, while the bottom portion of the lens is used for closer vision. Our regular bifocals are flat-top 28. This means that…